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A , <br /> Sequoia 819 Striker Avenue Suite 8 <br /> I JL Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> J www 5equoialabs com <br /> i <br /> I <br /> Delta Environmental ConsultantS(Cameron Park) Project Arco 2130 Stockton,CA <br /> 13330 Cameron Park Dr Project Number N/A <br /> Cameron Park CA,95682Repprted <br /> Project Manager Jay Johnson 01/08/01 14 34 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> i <br /> Sequoia Analytical - Sacramento <br /> � Reporting Analyte P g Spike Source °/uREC RPD <br /> Result Limit Units Level Result %REC Limits RPD <br /> Limit Nates <br /> Batch 0120335-EPA 5030B(PIT) <br /> Blank(0120335-BLKI) Prepared&Analyzed 12/29/00 <br /> Purgeable Hydrocarbons ND 500 ug/I — - <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 <br /> Methyl tent-butyl ether ND 250 " <br /> Surrogate a a a-Trtfluorotoluene 861 <br /> 100 861 60-140 <br /> LCS(0120335-BSI) Prepared&Analyzed 12/29/00 <br /> Benzene 101 0 500 ugtl 10 0 — <br /> Toluene 101 70-]30 <br /> 101 0 500 10 0 101 70-130 <br /> Ethylbenzene EO 0 0 500 " <br /> 10 0 100 70-130 <br /> nes(total) 309 0 500 " <br /> ethyl tett-butyl ether 30 0 103 70-130 <br /> 9 06 2 50 100 906 70-130 <br /> 906 <br /> 100 906 60-140 <br /> Matrix Spike(0120335-MSI) Source 5012300-01 Prepared&Analyzed 12/29/00 <br /> Benzene 105 <br /> Toluene 0 500 ugJl 10 0 ND I05 60-f 40 <br /> 10 6 0 500 " 10 0 ND 106 60-140 <br /> Ethylbenzene 106 0500 " <br /> Xylenes(total) 10 0 ND 106 60-140 <br /> 326 0 500 30 0 ND 109 60-140 <br /> Methyl cert-butyl ether 9 54 250 ]0 0 ND 954 60-140 <br /> Surrogate a a a-Tr�uoratoluene 8 89 ++ IO 0 <br /> 889 60-140 <br /> _Matrix Spike Dup(0120335-MSD 1) _ Source S012300-01 Prepared&Analyzed I2/29/00 <br /> Benzene 10 0 <br /> Toluene 0500 ug/1 10 0 ND 100 60-140 4 88 25 <br /> Ethylbenzene 101 0500 10 1 0 500 10 0 ND 101 60-140 483 25 <br /> " <br /> Xylenes(total) 100 ND 101 60-140 4 83 25 <br /> 31 2 0 500 <br /> Methyl tert-butyl ether 987 250 30 0 ND 104 60 140 439 25 <br /> Surrogate a a a-Trifluorotoluene 859 100 ND 987 60-I40 340 25I0 0 <br /> 8.59 60-140 <br /> Seclioia Analytical-Sacramento The results rn this PPY report apply to the samples analyzed in accordance with the chain of <br /> P <br /> custoay document This analytical report must he reproduced in its entirety <br /> Page 7 of 10 <br />